In the year2409, the London was the flagship of an Imperial fleet attacking Romulan RepublicstarbaseVauthil Station. A combined task force consisting of Starfleet, KDF and Republican forces defended Vauthil Station against the invasion fleet, closed rifts and activated relays to power up the station's defenses. The Allies were directed by Obisek. The London entered the battle after a sizeable portion of the invasion fleet was pushed back into the mirror universe by an anti-tachyon pulse from Vauthil Station, and led the remainder of the forces until its destruction. (STOmission: "Mirror Invasion")